As an archaeologist I needed a piece of kit which could hold extra equipment such as pens, pencils, rulers, trowel, eraser, 6 "nails, tape measure, line level, notebook, phone, knife, string, calculator, scissors, masking tape, clips etc.... and this item fitted the requirement. My first jacket lasted several years of heavy onsite activity and only recently gave up the ghost after one of the pockets got caught on a road iron and ripped. It had seen many washes and been through all types of climate. A useful piece of kit which I would highly recommend, hence I've just purchased another one. Hopefully this will last as long.